1-28
16 - IE
INSTALLERUSERTECHNICIAN
1.21 BOILER COMPONENTS.
Key:
1 - Electric connection terminal board
(very low voltage)
2 - Condensate drain trap
3 - Gas valve
4 - Air vent valve
5 - Flow probe
6 - Safety thermostat
7 - Gas nozzle
8 - Burner
9 - Detection electrode
10 - Condensation module
11 - Flue probe
12 - Heat exchanger safety thermofuse
13 - Manual air vent valve
14 - Sample points (air A) - (ue gases F)
15 - Negative signal pressure point
16 - Positive signal pressure point
17 - Igniter
18 - Ignition electrode
19 - Venturi
20 - Fan
21 - Air intake pipe
22 - System expansion vessel
23 - Boiler pump
24 - 3 bar safety valve
25 - By-pass
26 - System draining valve
27 - System lling valve
28 - Filling cut-o valve
N.B.: connection group (optional)
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